CN213223763U - Main transmission connecting shaft of rod and wire mill - Google Patents
Main transmission connecting shaft of rod and wire mill Download PDFInfo
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- CN213223763U CN213223763U CN202021587077.0U CN202021587077U CN213223763U CN 213223763 U CN213223763 U CN 213223763U CN 202021587077 U CN202021587077 U CN 202021587077U CN 213223763 U CN213223763 U CN 213223763U
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Abstract
The utility model discloses a main transmission connecting shaft of a bar wire rolling mill, which comprises a roller end joint component, a retainer component, a spline shaft and a motor end joint component, wherein the roller end joint component and the motor end joint component are respectively connected with two ends of the spline shaft, and the retainer component is arranged on the roller end joint component; the roller end joint assembly comprises a sleeve fork, a welding fork and a cross shaft, and the sleeve fork and the welding fork are respectively connected with the cross of the cross shaft; the step surface of the spline shaft is tightly pressed on the outer end surface of the welding fork, and the spline shaft is connected with the welding fork through a flat key; the spline shaft is connected with the motor end joint assembly through a spline pair. The utility model discloses the main drive spiale of stick wire rod rolling mill has shortened the time that the part was changed greatly, has reduced spare parts cost. Meanwhile, the inclination angle of the connecting shaft during working is reduced, the use strength of the connecting shaft is increased, and the stability of the connecting shaft is improved. In addition, the service life of the bearing and the connecting shaft is prolonged.
Description
Technical Field
The utility model relates to a final drive shaft spiale of excellent wire rod rolling mill group.
Background
The advanced technology of the modern metallurgical production industry such as rod and wire requires large-scale, efficient and high-precision rolling equipment, so that a new challenge is provided for the related spare part industry. For a bar and wire rolling mill group, a main transmission connecting shaft is a key transmission component of the whole set of continuous rolling equipment, the performance and the quality of the main transmission connecting shaft have a direct relation with the yield and the quality of bar and wire products, and the technical requirements are higher and higher.
The structure of the main transmission connecting shaft of the existing bar and wire rod rolling mill is shown in figure 4, which has the following problems: firstly, the welding fork 23 and the spline shaft 24 are welded into an integral form, when any one of the welding fork or the spline shaft is damaged, the integral of the welding fork and the spline shaft needs to be replaced, so that the replacement is time-consuming and labor-consuming, and the cost of spare parts is greatly increased; secondly, the roller end shaft sleeve 21 is connected with the left fork head 22 through splines and bolts, so that the conditions of spline abrasion and bolt looseness can occur, and the stability of spindle transmission is influenced; thirdly, the dismounting and mounting of the bolt for connecting the roller end shaft sleeve 21 and the left fork head 22 and the bearing in the retainer assembly 25 are very troublesome; fourthly, because the distance L from the leftmost end of the main transmission connecting shaft to the middle of the retainer assembly 25 is a fixed value, and the retainer assembly 25 is positioned on the left fork head 22, the roller end shaft sleeve 21 is longer, so that the weight is increased, but the total weight of the main transmission connecting shaft cannot be too heavy, so that the length of the spline shaft 24 is shorter, the distance between the two joints of the left roller end joint and the right roller end joint is shorter, the inclination angle of the connecting shaft is larger, the stability is poor, and the overall strength and the service life of the connecting shaft are reduced.
In conclusion, the main transmission connecting shaft of the existing rod and wire rolling mill increases the cost of spare parts, wastes time and labor when parts are assembled and disassembled, and has poor stability, low overall strength, short service life and lower production efficiency.
Disclosure of Invention
The utility model aims to solve the problem that a main drive spiale of excellent wire rod rolling mill is provided, it has shortened the time that the part was changed greatly, has reduced spare part cost. Meanwhile, the inclination angle of the connecting shaft during working is reduced, the use strength of the connecting shaft is increased, and the stability of the connecting shaft is improved. In addition, the service life of the bearing and the connecting shaft is prolonged. In a word, the utility model discloses an online change of roller end joint subassembly has reduced working strength, has prolonged spiale life, has improved production efficiency.
The utility model discloses a main transmission connecting shaft of a rod and wire mill, which comprises a roller end joint component, a retainer component, a spline shaft and a motor end joint component, wherein the roller end joint component and the motor end joint component are respectively connected with two ends of the spline shaft, and the retainer component is arranged on the roller end joint component; the roller end joint assembly comprises a sleeve fork, a welding fork and a cross shaft, and the sleeve fork and the welding fork are respectively connected with the cross of the cross shaft; the step surface of the spline shaft is tightly pressed on the outer end surface of the welding fork, and the spline shaft is connected with the welding fork through a flat key; the spline shaft is connected with the motor end joint assembly through a spline pair.
Further, the retainer assembly is arranged at the right side of the roller end joint assembly; the holder assembly comprises a holder body, a bearing, a left gland and a right gland and a connecting bolt, wherein the inner ring of the bearing is sleeved on the outer ring of the neck of the welding fork, the holder body is sleeved on the outer ring of the bearing, the left gland and the right gland are sleeved on the outer ring of the neck of the welding fork and are respectively pressed on the left end face and the right end face of the outer ring of the bearing, and the connecting bolt fixedly connects the left end cover, the holder body and the right end cover into a whole.
Furthermore, the retainer assembly also comprises a left sealing ring and a right sealing ring, and the sealing rings are sleeved on the outer circle of the neck part of the welding fork and are positioned in the inner hole of the gland; the lips of the two sealing rings are inward, and the gland at the right end is provided with a through hole.
Furthermore, the outer circle of the neck of the welding fork is a step circle, the diameter of the step circle gradually decreases from left to right, the bearing is sleeved on the middle section of the outer circle of the neck of the welding fork, the left end face of the inner ring of the bearing is tightly pressed on the step face of the outer circle of the neck of the welding fork, and the left sealing ring and the right sealing ring are respectively sleeved on the left section and the right section of the outer circle of the neck of the welding fork.
Furthermore, the retainer assembly also comprises a locking nut, the locking nut is screwed on the external thread of the excircle of the neck part of the welding fork, the left end surface of the locking nut is tightly pressed on the right end surface of the inner ring of the bearing, and the excircle surface of the locking nut is contacted with the inner ring of the right sealing ring.
Furthermore, the sleeve fork consists of a shaft sleeve part at the left end and a fork head part at the right end.
Further, the surface hardness of the step surface of the excircle of the neck part of the welding yoke is more than or equal to 45 HRC.
Further, the bearing is a single-row or multi-row bearing such as a cylindrical roller bearing, a tapered roller bearing, a self-aligning roller bearing and the like.
The utility model discloses the advantage of main drive spiale is: the welding fork is connected with the spline shaft through a flat key, and when the spline shaft is damaged or the welding fork is damaged, the welding fork can be independently replaced, so that the roller end joint assembly is replaced on line, the part replacement time is greatly shortened, the working strength is reduced, the production efficiency is improved, and the spare part cost is reduced; secondly, because the distance L from the leftmost end of the main transmission connecting shaft to the middle of the retainer body is a fixed value, and the retainer assembly is positioned on the right side of the roller end joint assembly, the length of the sleeve fork is shortened, the length of the spline shaft is lengthened, and the distance between the two joints is lengthened, so that the inclination angle of the connecting shaft during working is reduced, the use strength of the connecting shaft is increased, and the stability of the connecting shaft is improved; thirdly, the sealing ring and the through hole on the gland prolong the service life of the bearing; fourthly, the bearing and the sealing ring are convenient to replace, and the continuity of normal production is ensured; and fifthly, the sleeve fork is the combination of the roller end shaft sleeve and the left fork head in the connecting shaft, so that the conditions of spline abrasion and bolt looseness cannot occur, and the stability of the connecting shaft transmission is improved. In a word, the utility model discloses an online change of roller end joint subassembly has reduced working strength, has prolonged spiale life, has improved production efficiency.
Drawings
FIG. 1 is a schematic structural view of a main drive spindle of a rod and wire rolling mill according to the present invention;
FIG. 2 is a view in elevation at B-B of FIG. 1;
FIG. 3 is an enlarged schematic view at I of FIG. 1;
fig. 4 is a schematic structural view of a main drive spindle of a conventional rod and wire rolling mill.
Detailed Description
Example 1
A main transmission connecting shaft of a rod and wire rolling mill comprises a roller end joint component 1, a retainer component 2, a spline shaft 12 and a motor end joint component 13, wherein the roller end joint component 1 and the motor end joint component 13 are respectively connected to two ends of the spline shaft 12, and the retainer component 2 is arranged on the roller end joint component 1; the roller end joint assembly 1 comprises a sleeve fork 3, a welding fork 4 and a cross shaft 14, wherein the sleeve fork 3 and the welding fork 4 are respectively connected with the cross of the cross shaft 14; the step surface of the spline shaft 12 is tightly pressed on the outer end surface of the welding fork 4, and the spline shaft 12 is connected with the welding fork 4 through a flat key 11; the spline shaft 12 is connected with the motor end joint assembly 13 through a spline pair.
The utility model discloses in the final drive spiale of stick wire rod rolling mill: welding fork 4 and integral key shaft 12 in the roll end joint subassembly 1 are the parallel key and are connected, when integral key shaft 12 damages or welding fork 4 damages, need not to change welding fork 4 and integral key shaft 12 together, can change integral key shaft 12, welding fork 4 alone to the online change of roll end joint subassembly has been realized, has shortened the time that the part was changed greatly, has reduced working strength, has improved production efficiency, has reduced spare part cost.
Example 2
In the main drive spiale of the rod and wire mill: the retainer component 2 is arranged on the right side of the roller end joint component 1; the retainer assembly 2 comprises a retainer body 5, a bearing 6, a left gland 9, a right gland 9 and a connecting bolt 10, wherein the inner ring of the bearing 6 is sleeved on the outer ring of the neck part of the welding fork 4, the retainer body 5 is sleeved on the outer ring of the bearing 6, the left gland 9 and the right gland 9 are sleeved on the outer ring of the neck part of the welding fork 4 and respectively tightly press the left end face and the right end face of the outer ring of the bearing 6, and the connecting bolt 10 fixedly connects the left end cover 9, the retainer body 5 and the right end cover 9 into.
The holder assembly 2 plays a role of supporting the spline shaft 12 and the roll end joint assembly 1, and ensures transmission of the spline shaft 12 and the roll end joint assembly 1. Wherein, the left gland 9 and the right gland 9 ensure the axial positioning of the bearing 6 to be reliable. Meanwhile, the distance L from the leftmost end of the main transmission connecting shaft to the middle of the retainer body 5 is a fixed value, and the retainer assembly 2 is positioned on the right side of the roller end joint assembly 1, so that the length of the sleeve fork 3 is shortened, the weight is reduced, the spline shaft 12 can increase the corresponding weight to enable the length of the spline shaft to be lengthened, the distance between the two joints of the roller end joint on the left side and the roller end joint on the right side is lengthened, the inclination angle of the connecting shaft during working is reduced, the use strength of the connecting shaft is increased, and the stability of the connecting shaft is improved.
Example 3
In the main drive spiale of the rod and wire mill: the retainer assembly 2 further comprises a left sealing ring 8 and a right sealing ring 8, wherein the sealing rings 8 are sleeved on the outer circle of the neck part of the welding fork 4 and are positioned in the inner hole of the gland 9; the lips of the two sealing rings 8 are inward, and the gland 9 at the right end is provided with a through hole 15.
The radial positioning and the axial positioning of the sealing ring 8 are realized by the welding fork 4 and the gland 9; the lip of the sealing ring 8 faces inwards, which is beneficial to the storage of oil and gas of the bearing 6 so as to better lubricate the bearing 6; the through hole 15 on the gland 9 at the right end can take away partial heat of the bearing 6 through oil gas, and the service life of the bearing 6 is prolonged.
Example 4
In the main drive spiale of the rod and wire mill: the diameter that the neck excircle of welding fork 4 was the step circle, step circle from a left side to turning right and diminishing gradually, bearing 6 cover on the interlude of the neck excircle of welding fork 4, the left end face of its inner circle sticiss on the step face of the neck excircle of welding fork 4, control two sealing washers 8 cover respectively on the left side section and the right side section of the neck excircle of welding fork 4.
The bearing 6 is positioned on the middle section of the outer circle of the neck part of the welding fork 4, and the diameter of an inner hole of the bearing is smaller than that of a left step circle of the welding fork 4 and larger than that of a right step circle of the welding fork 4; the large-diameter section at the left end of the welding fork 4 enables the bearing 6 to be axially positioned; when the bearing 6 is damaged, the bearing 6 can be conveniently replaced by only dismounting the sealing ring 8 on the small-diameter section at the right end of the welding fork 4; meanwhile, the replacement of the sealing ring 8 is facilitated, and the continuity of normal production is ensured.
Example 5
In the main drive spiale of the rod and wire mill: the retainer assembly 2 further comprises a locking nut 7, the locking nut 7 is screwed on the external thread of the outer circle of the neck of the welding fork 4, the left end face of the locking nut is tightly pressed on the right end face of the inner ring of the bearing 6, and the outer circle face of the locking nut is contacted with the inner ring of the right sealing ring 8.
And the locking nut 7 is tightly pressed on the right end surface of the inner ring of the bearing 6, so that the axial positioning reliability of the bearing 6 is further ensured. Meanwhile, the clearance of the bearing 6 can be adjusted at any time through the locking nut 7, and the operation is convenient. The outer circle surface of the locking nut 7 is hardened, and the surface hardness is more than or equal to 45 HRC.
Example 6
In the main drive spiale of the rod and wire mill: the sleeve fork 3 consists of a shaft sleeve part at the left end and a fork head part at the right end.
The utility model discloses the combination of the sleeve fork in the final drive spiale for the roller end axle sleeve in the spiale and left jaw to save spline, bolt, spline wearing and tearing, the not hard up condition of bolt can not appear naturally, both avoided the bolt to dismantle and the difficulty of installation, improved the driven stationarity of spiale again.
Example 7
In the main drive spiale of the rod and wire mill: the surface hardness of the step surface of the outer circle of the neck part of the welding fork 4 is more than or equal to 45 HRC.
The hardness of the step surface of the welding fork 4 is more than or equal to 45HRC, and the wear resistance of the step surface of the excircle of the neck part of the welding fork 4 is improved.
Example 8
In the main drive spiale of the rod and wire mill: the bearing 6 is a single-row or multi-row bearing such as a cylindrical roller bearing, a tapered roller bearing, a self-aligning roller bearing and the like.
Claims (8)
1. The main transmission connecting shaft of the rod and wire mill is characterized in that: the roller end joint assembly comprises a roller end joint assembly (1), a retainer assembly (2), a spline shaft (12) and a motor end joint assembly (13), wherein the roller end joint assembly (1) and the motor end joint assembly (13) are respectively connected to two ends of the spline shaft (12), and the retainer assembly (2) is arranged on the roller end joint assembly (1); the roller end joint assembly (1) comprises a sleeve fork (3), a welding fork (4) and a cross shaft (14), wherein the sleeve fork (3) and the welding fork (4) are respectively connected with the cross of the cross shaft (14); the step surface of the spline shaft (12) is tightly pressed on the outer end surface of the welding fork (4), and the spline shaft (12) is connected with the welding fork (4) through a flat key (11); the spline shaft (12) is connected with the motor end joint assembly (13) through a spline pair.
2. The main drive spindle of claim 1, wherein: the holder component (2) is arranged on the right side of the roller end joint component (1); the retainer assembly (2) comprises a retainer body (5), a bearing (6), a left gland (9) and a right gland (9), and a connecting bolt (10), wherein the inner ring of the bearing (6) is sleeved on the outer ring of the neck of the welding fork (4), the retainer body (5) is sleeved on the outer ring of the bearing (6), the left gland (9) and the right gland (9) are sleeved on the outer ring of the neck of the welding fork (4) and are respectively tightly pressed on the left end face and the right end face of the outer ring of the bearing (6), and the connecting bolt (10) fixedly connects the left gland (9), the retainer body (5) and the right gland (9).
3. The main drive spindle of claim 2, wherein: the retainer assembly (2) further comprises a left sealing ring and a right sealing ring (8), and the sealing rings (8) are sleeved on the outer circle of the neck part of the welding fork (4) and are positioned in the inner hole of the gland (9); the lips of the two sealing rings (8) are inward, and the gland (9) at the right end is provided with a through hole (15).
4. The main drive spindle of claim 3, wherein: the diameter of the outer circle of the neck of the welding fork (4) is gradually reduced from left to right, the bearing (6) is sleeved on the middle section of the outer circle of the neck of the welding fork (4), the left end face of the inner circle of the bearing is tightly pressed on the step face of the outer circle of the neck of the welding fork (4), and the left sealing ring and the right sealing ring (8) are respectively sleeved on the left section and the right section of the outer circle of the neck of the welding fork (4).
5. The main drive spindle of claim 3, wherein: the retainer assembly (2) further comprises a locking nut (7), the locking nut (7) is screwed on the external thread of the outer circle of the neck of the welding fork (4), the left end face of the locking nut is tightly pressed on the right end face of the inner ring of the bearing (6), and the outer circle face of the locking nut is contacted with the inner ring of the right sealing ring (8).
6. The main drive spindle of claim 1, wherein: the sleeve fork (3) consists of a shaft sleeve part at the left end and a fork head part at the right end.
7. The main drive spindle of claim 2, wherein: the surface hardness of the step surface of the excircle of the neck part of the welding fork (4) is more than or equal to 45 HRC.
8. The main drive spindle of claim 2, wherein: the bearing (6) is a single-row or multi-row bearing such as a cylindrical roller bearing, a tapered roller bearing, a self-aligning roller bearing and the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021587077.0U CN213223763U (en) | 2020-08-04 | 2020-08-04 | Main transmission connecting shaft of rod and wire mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021587077.0U CN213223763U (en) | 2020-08-04 | 2020-08-04 | Main transmission connecting shaft of rod and wire mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213223763U true CN213223763U (en) | 2021-05-18 |
Family
ID=75894039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021587077.0U Active CN213223763U (en) | 2020-08-04 | 2020-08-04 | Main transmission connecting shaft of rod and wire mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213223763U (en) |
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2020
- 2020-08-04 CN CN202021587077.0U patent/CN213223763U/en active Active
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